Malachite Green. Introducing Kockney Koi Pond pond medic Media Plus Malachite Green 1%—an effective treatment against many ecto-parasites such as White Spot, Flukes, Costia, Ciliates, Trichodina, Gyrodactylus, Dactylogyrus, Flagellates, and other parasites. This product is of the highest quality and is completely Zinc-free.
